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Fimasartan CAS No. 247257-48-3 C27H31N7OS M.W. 501.65 F-491
 | Fimasartan-d6 CAS No. 247257-48-3 (non-labelled) C27H25N7OSD6 M.W. 507.69 F-492
 | Fimasartan Impurity 1 (Mixture of J and K) C28H33N7OS M.W. 515.69 F-493
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Fimasartan Impurity 2 CAS No. 1361024-52-3 C46H45N7OS M.W. 743.98 F-494
 | Fimasartan Impurity 3 C27H31N7S2 M.W. 517.71 F-495
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